<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>js变量</title>
		<script>
			var h=null;
			alert(typeof(h));
			var w=133;
			console.log(typeof(w));
			w="abc";
			console.log(typeof(w));
			w=2>1;
			console.log(typeof(w));
			w=new Object();
			console.log(typeof(w));
			
			
		</script>
	</head>
	<body>
	</body>
</html>